﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace NGUYENTHANHDONG.OOP.Inhertance___Polimophism.EXCERCISES.EXCERCISE_05
{
    abstract class ChuanISO
    {
        abstract public void BangTan(string a);
        abstract public void TanSo(string b);
    }
}
